Grate.



, 'PATENTED DEG. zo, 1904. 1

J, DBMARBST.

No.v 778.118.

GRATE.

,APPLICATION FILED H1B. s. 1904 N0 MODEL.

mmnmmm@ummm--N n ,n www k Patented December 20, 1904.

PATENT OEEICE JOHN' DEMAREST, OF BINGHAM'ION, NEW YORK.v

GRATE.

srncirronrronferming Ypart ef Letters Patentino. 778,118, dated December2o, 1904.

' Application filed February 6, 1904. Serial No. 192,261.

To @ZZ whom/i vit may concern: Be it known that LJOHNDEMAREST, a citizenof the United States, and a resident of Binghamton, inthe county oflBro''neand.,State of New York, have invented an Improvement in Grates,of which the following description, in connection with the accompanyingdrawings, is a specificatiomlike letters on the drawings representinglike parts.

My invention consists in improvements in grates intended particularly,though not eX- clusively, for cooking stoves or ranges. When the latterare supplied with two or more rocking grate members,"it is customary tointerconnect them, as by gears, so that the shaking or reciprocation ofthe one will result simultaneously in a similar but reverse shaking orreciprocation of the other. It often happens, however, that thenecessityfor sha-king is confined to one grate member-as, for example,when the lire burns brightly on the oven side of the hre-pot, but hasbecome clogged at the4 opposite side, and that grate member alone shouldbe shaken or should be shaken more' violently than the other in order Yto properly clear the lire to produce uniform combustion.

My invention provides means for actuating or agitating certain portionsof the grate area independently of the remaining portion thereof and,further, provides for preventing the movement of the'disengaged gratemember or members corresponding to the unagitated area during theagitation of-` the lremaining grate member or members to preclude thepossibility of dumping the fire or any portion thereof.

My'invention will be best understood by reference to the followingdescription, taken in connection with the accompanying drawings,illustrating one specific embodiment thereof, 'while its scope will bemore particularly pointed out in the appended claims.

In the drawings, Figure 1 is a plan view of my invention as applied toan ordinary form of cooking-stove grate. Fig. 2v is an end elevation ofthe same, showing the locking device in an intermediate position. Fig. 3is a side elevation of thesame, partly in section, looking from theright, Fig. 2. Fig. 4 is a View similar to Fig. 2 with the shaker inposition upon the left-hand member. Fig. 5 is a View similar to Fig. 4with the shaker engaging the other grate member.

Inthe drawings, .a and are the two grate `members of an ordinary form ofrocking grate, the same being pivotally mounted at their front and rearends in suitable portions of the stove-walls in such manner as to permitof the necessary rocking movement to give the desired agitation to thecontents of the fire-pot. At their front ends the grate members areprovided, respectively, with eX- teriorly-arranged engaging portions cand d, projecting through the front stove-wall c and adapted to beengaged by any suitable form of shaker or other agitating or operatingdevice. rlhe engaging portions c and d are herein shown as formedbysquaring the pivoted 'ends of their respective grate members,

as is usual, with the ordinary single shakingshank. By this means eithergrate member may be shaken or agitated independently of the other andwith reference to the character of the fire immediately above it.

Between the two projecting shaking portions cand cl there is providedsuitable means for locking or stopping the movement of either gratemember duringthe agitation or operation of the remaining one. In theembodiment of my invention herein illustrated this comprises a lockingmember f, slidable within suitable guideways g g, the said lockingmember being recessed at each side to provide lockingwalls adapted toengage the squared sides of either one or both of thetwo engagingportions c and CZ. The locking member f when in the intermediateposition shown in Fig. 2, wherein the squared shanks c and d are heldwithin corresponding locking-recesses, effectually prevents the movementof either of the said Shanks. When it is desired to rock one of thegrate-bars-as, for example,` V-the slidable locking member f is causedto be moved to the right as viewed in Fig. 2 to assume the positionshown in Fig. 4, where the slide is shown as wholly withdrawn fromengagement with the shank Z and confining within itsy appropriatelocking-recess the shank c only, which latter is IO therefore locked infixed position during the l grate members provided each with anexterocking of the grate-bar 7), which may now be effected by means ofthe shaker or operating member L.

If it be desired similarly to shake the gratebar a, the slidable lockingmember f is moved to the extreme left to the position shown in Fig. 5,where the conditions are reversed, the shank CZ being lixedly held inposition and the shank c being engaged by the shaker ready for itsagitation.

In order that the freedom or release of the grate member engaged by theshaker and the locking of the remaining grate member may be insured, theslidable locking member f is provided with a projecting portion z'intermediate the two shanks. rIhe space between the two shanks is sooccupied by the projecting portion t' that the shaker cannot be appliedto either shank excepting that the slide f, with the portion be moved toits extreme limit in the opposite direction, which insures the releaseof the shank previously engaged and the locking of the other shank. Thusin Figs. 4 and 5 it will be observed that space enough only has beenprovided between the engaged shank and the opposing wall of theprojecting portion z' to permit the application of the shaker to theshank.

In order that the movement of the shaker toward its position ofengagement with either shank may effect the necessary movement of thelocking means, I have shown the walls of the projecting' portion c' nextadjacent the Shanks c and CZ beveled and the inner edge of the shakerprovided also with a corresponding bevel adapted to engage the bevelupon the portion t' in order that the latter, together with the slide,may be forced laterally in one direction or the other, if it be notalready in appropriate position, as the shaker is forced upon the shank.

It will be obvious that my invention is susceptible of extensivemodification both in form and arrangement of parts from the specilicembodiment, which is submitted for illustrative purposes only, and thatthe same may be widely varied without departing from the spirit thereof.

I claiml. A rocking grate having two rocking grate members provided eachwith an exteriorly-arranged portion adapted to be engaged by anoperating member, said engaging portions being of non-circularcross-section, a slidable locking device between said engaging portionsand provided with locking-walls extended on each side to engage thesides of either of said engaging portions and lock the same in fixedposition, and means upon said slidable locking device to prevent theapplication of said operating member tothe engaged portion of one gratemember except the other grate member be locked.

2. A rocking grate having two rocking riorly-arranged portion adapted tobe engaged by an operating member, said engaging portions being ofnon-circular cross-section, and

a slidable locking device between said engaging portions and providedwith locking-walls extended on each side to engage the sides of eitherof said engaging portions and lock the. same in lixed position accordingto the position of said locking device.

3. A rocking grate having two rocking grate members provided eaeh withan exteriorly-arranged engaging portion adapted to be engaged by anoperating member, and a movable locking device between said engagingportions adapted also to be engaged by said operating member on itsengagement with either of said portions to lock the remainingI portionin fixed position.

it. A rocking grate having a plurality of rocking grate members lnovidedeach with an exteriorly-arranged engaging' portion, an operating memberadapted to engage with either of said portions, and means acting duringthe operation of one of said grate members for insuring the locking ofanother of said members.

A rocking grate having a plurality of rocking grate members and providedeach with an exteriorly-arranged portion, an operating member adapted toengage with either of said portions and locking means controlled by saidoperating member to insure the release of one of said grate members onengagement of said operating member therewith and the locking of aremaining grate member.

G. A rocking grate having a plurality of rocking grate members havingeach an exteriorly-arranged portion adapted te be engaged by anoperating member, and locking means between said exterior]y-arrangedportions for enforcing the locking of one ol said grate members in lixedposition during the agitation of a remaining member by said operatingmember.

7. Aroeking grate provided with a plurality of rocking grate members andmeans interposed between said grate members compulsorily locking one ofsaid members prior to the agitation of the other.

8. A rocking grate provided with a plurality of grate members,exteriorly-arranged engaging portions on said grate members, anoperating member adapted for individual engagement with said engagingportions to cause agitation thereof, and a locking device to enforce thelocking of a grate member during agitation of a remaining member.

9. A grate having a plurality of agitable grate members, means foroperating the same, and means for compulsoril y locking one ol' thegrate members during the agitation ofthe remaining member.

l0. A grate member having a plurality ol' independently-movable gratemembers, and

lOS

locking means for said grate members 1re/quiring the locked condition ofone member asa condition precedent to the release of the remainingmember.

11. A grate having a plurality of separatelyagitable grate members,combined with locking means for compellingA the locking of one of saidmembers'in fixed position during agitation of another.

12. A grate having a grate area formedby a plurality of agitable gratemembers, and means to effect separate agitation of different l portionsof the grate area, and means whereby the agitation of one grate-areaportion is possible only when another portion is quiet. 13. A gratehaving a plurality of movable grate members, an operating member, saidgrate members having means to permit of separate engagement between saidoperating member and any particular grate member'forV effecting theoperation of said member, and means permitting the operation of a memberby said operating member and preventing'the .movement of any gratemember not'engaged by the operating member.

14C. A grate having a plurality of movable grate members, an operatingmember, means to permit of separate engagement between said -operatingmember and different grate members, and means acting as a condition tothe engagement of said operating member with one of said grate membersto prevent the movement of another of said members.

15'. A grate having a plurality of agitable grate members, means tooperate any selected grate member, means to prevent the operation of theremainder rendered operative upon and by the application of theoperating means to the selected grate member. o

In testimony whereof I have signed my name to this specilication in thepresence of two subscribing witnesses.

JOHN DEMAREST. Witnesses:

W. H. BLANCHARD, FRED W. McMAHoN.

